Scientist 2

Scientist 2 is a 2005 Doom II megawad by Roland van der Velden. Built off a 2002 release called simply Scientist, which contained the first 11 maps, Scientist 2 contains those same levels plus 9 new single player levels (for a total of 20), together with 10 bonus deathmatch levels based off the single player ones.

The player journeys through a city, a Soviet base in Siberia, and finally a series of ancient ruins to track down and kill the main antagonist of the story: a scientist seeking to gain immortality through his experiments.

In 2023, Roland van der Velden created an updated version of Scientist and Scientist 2, dubbed Scientist 2023, which was initially released as a new official add-on for the Doom Classic Unity port before also seeing a PWAD release.

Custom content
Several new graphics are present, including changed weapons through a DeHackEd patch. The Wolfenstein SS and cyberdemon have been replaced by the eponymous Scientist, who acts as the main antagonist of the story as well as a recurring enemy and final boss for the last single player map.

The weapons are replaced as follows:
 * the super shotgun into dual shotguns
 * the chaingun into the
 * the rocket launcher into the crossbow, with arrow ammo to match
 * the plasma gun into a flamethrower, with corresponding fuel ammo
 * the BFG9000 into flamegrenades

Levels (single player)
Episode 1: Central City Episode 2: Siberia Episode 3: Sacred City
 * MAP01: The Scientist
 * MAP02: Kapital
 * MAP03: Prosperity
 * MAP04: Refinery
 * MAP05: Reservoir
 * MAP06: Construction Yard
 * MAP07: Siberia
 * MAP08: Frostbite
 * MAP09: Bio Lab
 * MAP10: Dark and Cold
 * MAP11: Pure as Snow
 * MAP12: Crown of Thorns
 * MAP13: Cursed Ground
 * MAP14: Dogma
 * MAP15: Son of Man
 * MAP16: Zarathustra
 * MAP17: Second Horseman
 * MAP18: Zilzal
 * MAP19: Crown of Creation
 * MAP20: Mount of Congregation

Levels (deathmatch)

 * MAP21: Decadence, based on MAP03: Prosperity
 * MAP22: Reconstruction, based on MAP06: Construction Yard
 * MAP23: Perestrojka, based on MAP07: Siberia
 * MAP24: Blue, based on MAP07: Siberia
 * MAP25: Frost, based on MAP08: Frostbite
 * MAP26: Byte, based on MAP08: Frostbite
 * MAP27: Thorn, based on MAP12: Crown of Thorns
 * MAP28: Green, based on MAP18: Zilzal
 * MAP29: Scientific Heresy, based on MAP19: Crown of Creation
 * MAP30: Eden, based on MAP20: Mount of Congregation: Prosperity

Soundtrack
All tracks are MIDI versions of songs.
 * MAP01: "In For A Ride" by Ocean's Edge
 * MAP02: "" by
 * MAP03: "" by Dream Theater
 * MAP04: "" by Dream Theater
 * MAP05: "" by Dream Theater
 * MAP06: "" by Dream Theater
 * MAP07: "" by Dream Theater
 * MAP08: "Don't Look Past Me" by Dream Theater
 * MAP09: "Lifting Shadows Off a Dream" by Dream Theater
 * MAP10: "" by Dream Theater
 * MAP11: "" by Dream Theater
 * MAP12: "Strange Days" by Ocean's Edge
 * MAP13: "" by Dream Theater
 * MAP14: "" by Dream Theater
 * MAP15: "" by Dream Theater
 * MAP16: "" by Dream Theater
 * MAP17: "Innocence Faded" by Dream Theater
 * MAP18: "" by Dream Theater
 * MAP19: "" by Dream Theater
 * MAP20: "" by Dream Theater
 * MAP21: "Lifting Shadows Off a Dream" by Dream Theater
 * MAP22: "6:00" by Dream Theater
 * MAP23: "Lie" by Dream Theater
 * MAP24: "Hell's Kitchen" by Dream Theater
 * MAP25: "Voices" by Dream Theater
 * MAP26: "Take the Time" by Dream Theater
 * MAP27: "Overture 1928" by Dream Theater
 * MAP28: "Burning My Soul" by Dream Theater
 * MAP29: "Strange Days" by Ocean's Edge
 * MAP30: "In For A Ride" by Ocean's Edge


 * Title screen: "Price of Progress" by Ocean's Edge
 * Intermission screen: "Price of Progress" by Ocean's Edge
 * Text screen: "Wait for Sleep" by Dream Theater